Apparatus for elevating or lifting acids or the like.



I. BRADBAR. nnnuus fon ummm; on mmm Aclos on 1HE uns, APPLICATION HLED )UNE l, 1911. 1,261,351- Patentd Apr. 2, A1918.

Y y@ u PATENT OFFICE.

THOMAS BRADBEAB, F SPARKBROOK, BIRMINGHAM, ENGLAND.

APPARATUS FOR ELEVATING 011Y LIFTING ACIDS 0R THE LIKE.

Specification of Letters Patent.

Patented Apr. 2, 1918.

Application filed .Tune 13. 1917. Serial No. 175,486.

To all `ile/i om it may concern:

Be 1l known that l, Tiroir/ls Bmmsnnn,

subject of the King of Great lvrifnn,l resid- .around the fiont, with ing:` :it lo Medlicott rond. Sinirkln'ook, Bir niinghnm, in the county of VnrWick, Eng;- lnnd. llnve invented :i new fand useful A ppn rntus for Elevation or Liftingr Acids or the like; and lf do hereby dechire the :Following to lle :L full, clear, :1nd exact deecription of the, same.

My invention comprises n new or improved elevnting or lifting apparatus for acids or the like and has for its object the provision of simple and efficient acid p1-ooi mechanism whereby icidf`v may he automatically raised from n low level to n high level.

According to this iIn-'ention the acid elle vnltor broadly comprisesA a main casing or body hermeticnlly sealed, Within which is located an open-topped Hoet, in combination with nn acid inlet valve.y e compressed nir Yinlet valve and an air vent: all so arranged that when ncid loWs in it raises the float which automatically closes the compressed nir inlet valve and opens the air vent, the continued inflow of ncid finallyv sinking the Hout, opening the compressed nir valve and closing the nir vent, the incoming cornpressed nir then expelling the acid from the interior of the floot es Well as from partly the result that the float will again rise, shut oil the compressed eir supply and open the air rent,A this cycle of? operations being automatically repeated.

Referring to the drawings The figure is e vertical section of one form of elevator according to this invention.

Tn carrying,r my invention into practice as illustrated npon the accompanying draW- inge the apparatus comprises a cast iron tank; l which may be conveniently of circular form in plan rounded at the bottom end flanged at the top to 'receive n cover plate. 2, the connection between which and the tank is hermeticelly scaled.

Within this tank is placed e float 3 which is of similar shape to the tank but smaller, so that when the Hoot is in position there is an annular Space between 'the outer periphery of the float and the inner periphery of the tank.

The, acid is arranged to ovv into the tank through a, suitable non-return valve 5, the Vinlet being :it n substsmtinl dietnnee ,alcove the bottom of the trink.

6 posses through thecover and hns two bronches 7, S. one 7 extending right to the bottom of the interior ol' the lient while the other brunch is in the nnnulnl' spnee between float and tank nd is nt :i (liv-:fonce from the bottom of the trink, so that ivllil-Il the whole of the :leid inside llie llont is discharged the tank is never eulirely emptied, there being elw: vn suliieieilt neid below this delivery br-.inch to support the empty fioul..

l 'The compressed nir inlet valve 2li and nir "vent 2l :1re loented in n vulve casing "l" disposed zit n ciuisidernlile distance above the trink and thus quite cle-nr of nll :leid nttncl hoi-h mlves being nel'un ted hy the one lever 22j controlled h v the rod 24 connected to the llont und so :wronged that when the float rises the valve 2U is closed and the air vent 2l open. 'lhe valves und lever are, constructed of acid proofmateri-.il Whenever necessary.

In operation, to start the apparatus the compressed air supply is closed and the acid inlet opened, when the acid )vill flow in, opening Athe nir vent if this is not already opened. the acid continuing to flow into the annuler splice between tank and Hoet until it finally overflows over the top of the ont into the interior` it until there is sul`- ficient lcid within the float to sink it, the. sinking of the l'loat automatically opening the compressed air valve and closing the nir vent. The incoming compressed nir then expels the acid from the interior of the tlont through the one branch of the delivery pipe and part of the cid which is between the tank and the float through the other branch of the delivery pipe, the discharge 0f acid continuing until the llont is empty,

i but, as previously stated, a certain-quantity of acid is always leftbetween the float and 'tank lVhen sullicient acid has been discharged the empty float will rise, close the compressed air valve and open the air vent when more acid will How in and the cycle of operations be repeated automatically.

A check valve 27 may be provided in the delivery pipe to prevent. the acid falling back into the tank. A cleaning door 25 is also provided at the footof the tank when required.

This elevator will elevate orklift Weak or strong sulfuric acid, Week or strong nitric, olenm, or any commercial acid (except h v drofluoric) with the seine elevator. This means that if n chemical manufacturer installs an elevator, this Same elevator will snit practically all purposes.

What I claim then is:-

l. In apparatus for elevating or lifting acids or the like, the combination of a tank sealed in an airtight manne an opentopped float therein; means tor admitting acid to the tank and exterior of the float and later to the interior of the float so as to sink tlnl float; outlet pipes and valves to the tank and interior of the tloat; and means controlled liv the loat for admitting compressed air to the interior of the tank when the. float ysinks; for the purpose specified and substantially as set forth.

2. ln apparatus for elevating or lifting acids or the like. the combination of a tank sealed in an airtight manner; an opentopped tloa therein.; means for admitting acid lo the tank and exterior of the float and later to the interior ol' the float so as to .sink the float outlet pipes and valves to the tank and interior of the float; a. compressed air inlet valve; an air vent; means con trollecl by the float for opening the compressed air valve when the float sinks and closingl it when the float rises; and means also controlled by the float for closing the air vent when the compressed air inlet is open and opening said air vent when the compressed air inlet is closed; for the purpose specified and substantially as set forth,

-3. In apparatus for elevating or lifting acids or the like, the combination of a tank sealed in an airtight manner; an opentopped float therein; a. non-return valve for admitting aci(| to the, tank and exterior of the float. said acid ultimatelyv overflowing to the interior of the lloat; a discharge pipe having a branch passing to the bottom of the interior of the lloat and a branch passing nearly to the bottom of the tank; a non-return valve in th(l discharge pipe; a compressed air inlet valve; an air vent; means controlled by the float for opening the compressed air valve when the float sinks and closing it when the float rises; and means also controlled by the float for closing' the air vent when the Compressed air inlet is open and opening said air vent when the compressed air inlet is closed: for th(` purpose specified and suhstantiallv as set forth. 4, Tn apparatus for elevating or lifting Aacids or the like, the combinal ion of a tank sealed in an airtight manner; an opentopped float therein; a non-return valve for admitting acid to the tank and exterior of thc float: said acid nltimateliy fiverfloaing into the interior of the float: a discharge pipr` having a branch passing to the bottom of the interior of the float and a branch passing' nearl)y lo the bottom ol' the tank; a non-rt-tnrn valve in the dischargipipe: and means controlled b v the tloat for admitting compressed air to the interior of the tank when the float sinks for the. pur ose speci fied and substantially as set fort i.

5. In apparatus for elevating or lifting acids or the like, the combination of a tank sealed in an airtight manner; an opentoppcd float therein; means for admitting acld to the tank and exterior of the lloat and later to the interior of the float so as to sink the float; outlet pipes and valves to the tank and interior of the float; a valve chamber; a eon'ipressed air inlet valve in said chamber; an air discharge valve, in said chamber; a controlling lever adapted lo open the eompresstal air valve and close the. air valve when said lever moves in one direetion and vice versa to-close the compressed air valvll and open the air valve when it moves in the opposite direction; and a rod connecting said lever to the float for the purpose specified.

ln apparatus for elevating or lifting acids or the like` the combination of a tank sealed in an airtight manner; an opentopped float therein; means for admitting acid to the :wl: rnd exterior of the float and later to the idc-rior of the float so as to sink the float; outlet pipes and valves to the tank and interior of the float; a valve chamber; a compressed air inlet valve in said chamber; an air discharge valve in said chamber; a controlling lever adapted to open the compressed air valve and close the air valve when said lever moves in one direc tion and vice versa to close the compressed air valve and open the air valve When it moves in the opposite direction; and means connecting said lever to the float.

7. In apparatus for elevating or lifting acids or the like` the combination of a tank sealed in an airtight manner; an opentoppcd float therein; a non-return valve for admitting acid to the tank and exterior of the float, said acidrultimately overflowing into the interior of fthe float; a discharge pipe having a brancli passing to the bottom of the interior of the float and a branch passing n arly to thel` bottom of the tank: a non-return valve in the discharge pipe; a valve chamber; a eomlpressed air'inlet valvy in said chamber; an air discharge valve in said chamber; a controlling lever adapted to open the compressed air valve. and close the air valvt.` when said lever moves in one. direction and vice versa to close the comY` pressed air valve and4 open the air valve when it moves in the 0I posite direction; and a rod connecting said ever to the float for the purpose specified.

8. In apparatus forl elevating 0r liftingr acids or the like, the combination of a tank sealed in an airtight manner; an opentoppev' float therein: means for admitting acid to the tank and exterior of the float and later to the interior of the float so as to sink the float; outlet pipes and valves to the tank and interior of the Hoet; and means controlled by the float for admitting compressed air to the interior of the tanlrwhen the float sinks; for the purpose specified and substantially as set forth.

9. In a paratus for elevating or lifting acids or t e likel the combination of :t tank sealed in an airtight manner; an opentrpped oat therein; anon-return valve for a mitting acid to the tank and exterior of the oa't; said acid ultimately overfiowing into the interior of the fiest; a discharge pipe having a branch passing to the bottom of the interior of the fio-lit and a branch 15 lmessing nearly to the bottom of the tank; a

:lon-return valve in the discharge pipe; a

.valve chamber; a compressed air inlet valve m said chamber; an air discharge valve 1n said chamber; a controlling lever adapted to ycharge door at the bottom of the tank.

In testimony whereof I afiix my signature in presence of two witnesses.

`THOMAS BRADBEAR. Witnesses:

ROBERT BURNS, HENRY BRocxANK. 

